Type-writing machine.



No. 681.846. Patented Sapt. 3, I90I.

L..P. DISS.

TYPE WRITING IAGI'IINE.

(Application filed Jan. '12, 1900.) (N 0 M o d 0|.)

WITNESSES: IINVENTUR; W %4%/ [W JM H15 ATTORNEY UNTTED STATES PATENTOFFICE.

LOUIS P. DISS, OF ILION, NEW YORK, ASSIGNOR TO VVYGKOFF, SEAMANS doBENEDICT, OF SAME PLACE.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 681,846, datedSeptember 3, 1901. Application filed January 12, 1900. Serial No. 1,181.(No model.)

To all whom it may concern:

Be it known that I, LOUIS P. DIss, a citizen of the United States, and aresident of Ilion, in the county of Herkimer and State of New York, haveinvented certain new and useful Improvements in Type-Vvriting Machines,of which the following is a specification.

My invention relates to tabulating mechanism for type-writing machines;and its object is to provide an improved adjustable stop or tappet foruse upon the tabulating-rack of the papei carriage.

The invention consists in certain features of construction andcombinations of devices, all as will be hereinafter fully described, andparticularly pointed out in the concluding claims.

In the accompanying drawings, Figure 1 is a perspective view of so muchof the tabulating mechanism of a type-writing machine as is necessary toillustrate my invention. Fig. 2 is a sectional view of a retaining-hookand a spring attached thereto. Fig. 3 is a sectional view of a tappetincluding the retaining-hook. Fig. 4. is a perspective view of aretaining-hook. Fig. 5 is a perspective view of the plate portion orblade of the tappet. Fig. 6 isa perspective view ofa spring. Fig. 7 is aView of a sheet-metal blank from which the retaining-hook is made. Fig.8 is a perspective view of a fragment of a rack, showing a tappet beingplaced in position. Fig. 9 is an enlarged view taken on the line 00 m,Fig. 1, and looking in the direction of the arrow and showing the rackin section and a tappet in position thereon. Fig. 10 is an enlarged Viewshowing the method of inserting the tappet between the teeth of therack. Fig. 11 is a view similar to Fig. 10, but showing the po sition ofthe parts while the tappet is being pressed down to its workingposition.

In the several views similar parts are designated by similar numerals ofreference.

Key-controlled denomination-stops 1, each being of a thickness equal tothe letter-space movement of the paper-carriage and having a beveledvertical working edge 2, are assembled side by side between paralleljaws 3 and provided with vertical operating-levers 4:, by which anyselected stop may be projected, as illustrated at Fig. 1. A rack-bar 5,having teeth 6 out upon its front and rear edges, is secured by means ofscrews 7 to the lower ends of arms 8, which are secured to the carriage.(Not shown.) Teeth 6 are disposed at intervals equal to theletter-spacing movements of the paper-carriage. The parts just describedare usual in the tabulating mechanism supplied for Remington No. 6typewrit-iugmachines. Myimproved tappetcomprises a plate portion 9,which is notched vertically at 10 to form a fork, whereby said plate isenabled to be seated between teeth 6 upon opposite sides of the rack-bar5, the width of the said opening 10 being substantially equal to thethickness of the rack-bar at 5 between the bottoms of the kerfs, Figs.8, 9, 10, and 11. One of the prongs of the fork is widened so as to forma toothed portion 11, which is beveled so as to leave a clearance forthe projection of the stopblades 1. For retaining the tappet in positionupon the rack-bar an L-shaped detent is provided which is made of sheetmetal, folded so as to partially embrace the plate 9. This detentcomprises a vertical stem or arm 13, from the upper portion of whichproject parallel arms 14, one upon each side of the plate 9, the freeends of said arms being pivoted to the plate at 12. At the lower end ofsaid stem is provided a pair of beveled catches or hooks 15, which whenthe tappet is in position upon the bar engage the lower projectingcorners of the teeth 6 upon the front side of the rack-bar. Near itslower end, the stem 13 is perforated at 16, and into this perforation isinserted the bent end 17 of a wire spring, the body of said springextending upwardly at 18 along the edge of the plate 9 and being bent atabout right angles, so as to extend over and bear upon the top edge ofsaid plate at 19. The stem 13 is firmly held by the spring between thebody portion 18 and the bent end 17. The relative position of the hookand plate when de- 5 tached from the rack-bar is indicated at Fig. 3,from which it will be seen that the said spring has a tendency to causethe catch end of the hook to swing to a point below the notch 10 in theplate 9. Undue swinging of the hook outwardly from said plate isprevented by a pin stop or stud 20, secured in said plate in rear of thepivot 12 and just below an ear 21, formed upon the free end of each ofthe arms 14 and in posit-ion to be engaged by said ear upon a slightvibration of the hook, as indicated by dotted lines at Fig. 9.

In operation the corner of the wide prong of the fork is insertedbetween the selected teeth upon the rear side of the rack-bar, asindicated at Fig. 10, and the other prong is passed down between thecorresponding teeth on the front side of the rack-bar. The rounded underportion 15 of the hook contacts with the top of the rack-teeth, and byreason of the downward pressure put upon the tappet by the operator thehook is forced outwardly against the tension of the spring 18, asindicated at Fig. 10, so as to allow the turning of the plate to avertical position, as indicated at Fig. 11. Thereupon the tappet ispressed down as far as it will go-that is, until the upper edge of thenotch 10 contacts with the upper face of the rack-bar. At this time thespring 18 causes the hook to snap under the lower edge of iherack-teeth,as indicated in full lines in Fig. 9, whereby accidental displacement ofthe tappet is prevented. As many of these tappets may be placed inposition as required, and tabulating-work may then proceed in the usualmanner. In removing a tappet it is necessary only to grasp the arms 14at their forward portions and give a slight lift in the directionrequired for removing the plate 9 from the rack-bar, which will causesaid arms to swing about the pivot 12 and the hook 15 to becomedisengaged from the lower edge of the racktooth, as indicated in dottedlines at Fig. 9, whereupon continued lifting causes the en tire deviceto be withdrawn from the rack-bar, the pointof the hook 15 riding alongthe front edges of the teeth 6. To facilitate the described releasingaction of the hook, the working edge of the latter is slightly beveledor inclined downwardly, as shown in the several views. It will beobserved that this construction is very compact. The metal used may bequite thin, and in practice I have succeeded in reducing the thicknessof the entire structure to something less than the ordinary letter-spacemeasurement of a typewriting machine. It will also be observed that thewhole forms a Verydurable and convenient device, which can be made atvery slight expense, and that the tappet when placed in position isfirmly secured and not liable to become accidentally displaced. Thetoothed portion 11 of the plate 9 has a solid side support between theteeth of the rackbar, insuring the accurate positioning of the carriageat the operation of the tabulating mechanism, while at the same time thestructure is very light, so that the addition of undue weight of thepaper-carriage is avoided.

Various changes in detail construction and arrangement may be resortedto without departing from my invention, which is also adapted for use ina variety of tabulating-machines.

What I claim as new, and desire to secure by Letters Patent, is asfollows:

1. A detachable tappet for the tabulating mechanism of a type-writingmachine, comprising a thin plate adapted to engage between the teeth ofa rack-bar and having a toothed portion, and comprising also anindependently-movable detent for engaging said rackbar to retain thetappet in place.

2. A detachable tappet for the tabulating mechanism of a type-writingmachine, comprising a thin plate adapted to engage between the teeth ofa rack-bar and having a toothed portion and comprising also a pivoteddetent for engaging said rack-bar to retain the tappet in place, andmeans forlimitiug the movement of said detent.

3. A detachable tappet for the tabulating mechanism of a type-writing.machine, comprising a thin plate having a notched portion for engagingbetween teeth upon the opposite sides of the rack-bar, a toothedportion, and a detent pivoted to said plate.

t. A'detachable tappet for the tabulating mechanism of a type-writingmachine, c mprising a thin plate having a notched portion for engagingbetween teeth upon the opposite sides of a rack-bar, a toothed portion,a detent pivoted to said plate, and a spring for said detent.

5. A tappet for the tabulating mechanism of a type-writing machine,comprising a plate, a detent formed of sheet metal and folded topartially embrace said plate, and a spring.

6. A detachable tappet for the tabulatlng mechanism of a type-writingmachine, comprising a thin forked plate, at least one of the prongs ofthe fork being widened and adapted to coact with the denomination-stopsof the tabulating mechanism, and also comprising a spring-pressed detentfor retaining said plate in position.

7. A detachable tappet for the tabulating mechanism of a type-writingmachine, comprising a thin forked plate, at least one prong of which isbeveled, and a detent pivoted to said plate and adapted to retain it inposition.

8. A tappet for the tabulating mechanism of a type-writing machine,comprising a plate which is notched Vertically to form a fork, wherebysaid plate is enabled to be seated between teeth upon opposite sides ofa rack-bar, the width of the said notch being substan tially equal tothe thickness of the rack-bar between the bottoms of the kerfs, and aspringpressed detent mounted on said plate.

9. A tappet for the tabulating mechanism of a type-writing machine,comprising a plate adapted to be engaged by the denominationstops of thetabulating mechanism, and a detent pivoted to said plate and comprisinga folded stem 13, parallel arms 14 extending therefrom, one upon eachside of the plate,- said arms being pivoted to the plate at their freeends, and means upon the lower end of said stem for engaging the lowerprojecting corners of the teeth upon the rack-bar.

10. A tappet for the tabulating mechanism ofa type-Writing machine,comprising a plate, a folded detent device partially embracing saidplate, and a spring secured to said detent device, and adapted to bearupon the upper edge of said plate.

11. A tappet for the tabulating mechanism of a type-writing machinecomprising a forked plate, a folded detent device pivoted thereto andprovided with a perforation, a spring secured in said perforation andextending upwardly and bent at substantially right angles and adapted tobear upon the upper edge of said plate.

12. A tappet for the tabulating mechanism of a type-Writing machine,comprising plate 9, detent 13 having arms lat pivoted at 12 to saidplate, and also having a catch 15, car 21 formed on at least one of saidarms 14, and stop 20 on said plate adapted to be engaged by said-ear 21.

13. A tappet for the tabulating mechanism of a type-writing machine,comprising two parts pivoted to each other, one of said parts beingadapted to be seated between the teeth of the rack-bar and the other ofsaid parts being adapted to prevent accidental displacement of thetappet.

14. A detachable tappet for the tabulating mechanism of a type-writingmachine, comprising two parts pivoted to each other, one of said partsbeing folded so as to partially embrace the other of said parts, and oneof said parts being adapted to be seated between the teeth of therack-bar and also to engage the denomination stops of the tabulatingmechanism and the other of said parts being adapted to retain the tappetin position upon the rack-bar of the tabulating mechanism.

15. Atappet for the tabulating mechanism of a type-Writing machine,comprising a thin forked plate portion adapted to engage between theteeth of the rack-bar, and a springpressed detent adapted toautomatically move to a position to retain the tappet upon the bar afterthe latter is placed in position, the construction and arrangement beingsuch that upon grasping said detent and moving it in a direction toremove the tappet from the bar, said detent is automatically releasedand the removal of the tappet is permitted. 16. A tappet for thetabulating mechanism of a type-Writin g machine, comprising a plate andaspiring-pressed L-shaped detent, the detent being pivoted to the plateat the end of one of its L-arms and being provided with a catch portionat the end of the other L-arm.

17. The combination with a bar correspondingly toothed on two sides, ofa thin plate-like tappet having portions adapted to enter between theteeth on said sides so as to support and sustain said tappet, and anindependent spring-pressed catch mounted on said plate and adapted toengage the bar and hold said tappet against accidental displacement.

Signed at Iliou, in the county of Herkimer and State of New York, this10th day of January, A. D. 1900.

LOUIS P. DISS.

Witnesses:

RALPH W. Gouen, CHAS. E. MAURICE.

